JPH0457897A - Detergent composition - Google Patents

Abstract

PURPOSE:To prepare a detergent compsn. excellent in detergency, safety and adaptability to rinsing and free from the danger of environmental pollution by compounding a specified alkylene oxide and an amine compd. CONSTITUTION:A detergent compsn. comprising 50% wt. or above of an alkylene oxide compd. selected from those of formulas I, II and III and 0.05-5% wt. of an amine compd. having 1-5 nitrogen atoms and a mol. wt. of 50-300. In the formulas, R<1> is a 1-22C hydrocarbon residue; R<2> and R<3> are each a 2-4C alkylene group; Y is H or 1-4C alkyl or acyl; (m) is 1-15; and (n), (l) and (p) are each 0-15. The detergent compsn. is useful as a detergent for precision parts or the jigs and tools used in assembling precision parts thereof. By adding a surfactant, the compsn. is additionally improved in adaptability to rinsing and detergency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cleaning composition, and more particularly, to a cleaning composition that cleanses oils, fats, and machine oils that exist on the solid surfaces of precision parts or jigs and tools used in the assembly process thereof. The present invention relates to a cleaning composition that is excellent in removing stains such as cutting oil, grease, liquid crystal, rosin flux, etc., and has excellent rinsability.

[Problems to be solved by conventional techniques and inventions] Conventionally,
Hydrocarbon solvents such as kerosene, benzene, xylene, etc.; ) Chlorinated solvents such as IJ chloroethylene, tetrachloroethylene, etc. to remove stains mainly composed of organic substances such as oils and fats that exist on the solid surfaces of precision parts, tools, etc. ; Freon-based solvents such as trichlorotrifluoroethane; water-based cleaning agents containing sodium orthosilicate or caustic soda mixed with surfactants and virgoo are used. In particular, fluorocarbon solvents or chlorinated solvents are used for electronic, electrical, mechanical, and other parts due to their high cleaning properties and flame retardant properties.

However, cleaning agents using chlorine-based and fluorocarbon-based solvents have major problems in terms of safety, toxicity, environmental pollution, and the like. In addition, hydrocarbon solvents, especially nibenzene, xylene, etc., are highly toxic compounds and are designated as hazardous substances under the Industrial Safety and Health Act. It is not preferable to use it as an agent. On the other hand, water-based cleaning agents are preferable in that they are less dangerous and toxic than solvent-based cleaning agents, but they are several steps inferior in cleaning power.

Therefore, in recent years, US Pat. No. 4.511.488, US Pat. No. 4.640.719, and US Pat.
Terpenes such as limonene, pinene, and dipentene, as seen in Specification No. 7, have been proposed. These terpenes, typified by limonene, are compounds that are both safe and easy to clean, but they have a low flash point and require large-scale equipment when used. Furthermore, because it is derived from natural products, it is difficult to obtain products of stable quality, and there is a limit to the amount of supply, making it impractical as an industrial cleaning agent.

On the other hand, rinsability after cleaning is also a problem, since residual cleaning agents may have an adverse effect on plastic parts and the like.

The object of the present invention is to improve the shortcomings of conventional cleaning agents as described above, to have excellent cleaning properties, safety, no environmental pollution, and excellent rinsability, and to be used for precision parts or their assembly processing process. An object of the present invention is to provide a cleaning composition for removing dirt components such as oils and fats, machine oil, cutting oil, grease, liquid crystal, and rosin-based flux existing on the solid surfaces of jigs and tools.

[Means to solve the problem]

Under these circumstances, the present inventors have conducted extensive research to solve the above problems, and have found that a cleaning composition that meets the above conditions can be obtained by blending an amine compound with a specific alkylene oxide compound. The present invention has been completed.

That is, the present invention comprises the following components (A> and (B) (A)
The following general formulas (I), (II) and (III) R'-0
-GR"0÷1--(R30IY (I
)R'-COO+R2 Kano 1-←”0)-r-Y
(II) [In the formula, R' represents a hydrocarbon residue having 1 to 22 carbon atoms, R2 and R3 each represent an alkylene group having 2 to 4 carbon atoms, and Y is a hydrogen atom or a hydrocarbon residue having 1 to 4 carbon atoms. represents an alkyl group or an acyl group, 0 is an integer of 1 to 15,
n, 1 and p each represent an integer of 0 to 15] Alkylene oxide compound selected from the group consisting of compounds represented by 50% by weight or more (B) The number of nitrogen atoms is 1 to 5 and the molecular weight is in the range of 50 to 300. The present invention provides a cleaning composition for precision parts or tools containing 0.05 to 5% by weight of an amine compound.

The alkylene oxide compound as component (A) in the cleaning composition of the present invention has the general formula (I), (If) or (
It is represented by II[).

In general formulas (I), (II), and (III), lit must be a hydrocarbon residue having 1 to 22 carbon atoms, particularly a hydrocarbon residue having 4 to 14 carbon atoms. is preferred. If R' is not a hydrocarbon residue, the affinity with organic stains such as flux and mineral oils will decrease;
If the number of carbon atoms in the hydrocarbon residue exceeds 22, solid content tends to precipitate in the cleaning liquid, and the viscosity of the cleaning liquid itself also increases, resulting in decreased workability and cleaning performance.

In addition, m is 1 to 15, and nSl and p are each 0 to 15.
must be an integer. It is preferable that m+n is in the range of 1 to 15, and particularly those in which m+n and 1+p are each in the range of 1 to 10 exhibit excellent effects.

Ill of the alkylene oxide compound of the component
] Examples include alcohols having straight or branched alkyl groups such as methyl alcohol, ethyl alcohol, propyl alcohol, butyl alcohol, isobutyl alcohol, hexyl alcohol, octyl alcohol, lauryl alcohol, oleyl alcohol, and Guerbet alcohol having 18 carbon atoms. Phenols such as phenol, cresol, nonylphenol, and styrenated phenol; Alicyclic alcohols such as cyclohexanol; Acetic acid, propionic acid, hexanoic acid, isooctylic acid, lauric acid, oleic acid, stearic acid, carbon number 22 Fatty acids with linear or branched alkyl groups such as Guerbet's acid; organic carboxylic acids such as methacrylic acid and benzoic acid; ethylamine, diethylamine, hexylamine, dibutylamine,
Alkylene (ethylene, propylene, butylene) oxide alone or Further examples include compounds in which the terminal hydroxyl group of these alkylene oxide adducts is methylated, ethylated, or butylated with alkyl chloride, etc., or esterified with acetic acid, propionic acid, etc.

(A) The alkylene oxide compound having an M content can be blended singly or in combination of two or more, and is included in the cleaning composition of the present invention for the purpose of maintaining detergency and ensuring its sustainability. It is blended in an amount of 50% by weight or more (hereinafter simply expressed as "%").

The alkylene oxide compound as component (A) has a certain degree of cleaning power by itself, but when used in combination with the amine compound as component (B), the cleaning performance becomes good even when water is mixed in.

The amine compound of component (B) has a nitrogen atom number of 1.
~5 and a molecular weight in the range of 50 to 300 is used. If the molecular weight is less than 50, the odor of the resulting cleaning composition will be too strong, and if the molecular weight exceeds 300, the cleaning performance improvement effect will be reduced. , monoethanolamine, jetanolamine, triethanolamine, dimethylethanolamine, dibutylethanolamine, and other alkylolamines; morpholine, ethylmorpholine, and other morpholines; piperazine, triethyldiamine, pentamethyldiethylenetriamine, tetramethylpropylenediamine, etc. can be mentioned.

The amine compound (B) component is blended in the detergent composition of the present invention in an amount of 0.05 to 5%. If the blending amount is less than 0.05%, the cleaning performance improvement effect will not be sufficient, and if the blending amount is 5%.
If it exceeds 100%, the cleaning composition becomes too strongly alkaline, which may cause corrosion of materials such as aluminum and deterioration of physical properties of materials such as plastic.

By further blending component (C), a surfactant, in the cleaning composition of the present invention, the water rinsing properties are improved and the cleaning power is further increased.

As the surfactant of component (C), anionic surfactant,
Any of cationic activators, nonionic activators, and amphoteric activators can be used.

More specifically, fatty acid salts, higher alcohol sulfate ester salts, liquid fatty oil sulfate ester salts, sulfates of aliphatic amines and aliphatic amides, fatty alcohol phosphate ester salts, sulfone salts of dibasic fatty acid esters, fatty acids Anionic activators such as amidosulfonates, alkylallylsulfonates, and formalin-condensed naphthalene sulfonates; cationic activators such as aliphatic amine salts, quaternary ammonium salts, alkylpyridinium salts; polyoxyalkylene alkyl ethers,
polyoxyalkylene alkylphenol ethers,
Nonionic active agents such as polyoxyalkylene alkyl amines, polyoxyalkylene alkyl esters, sorbitan alkyl esters, and polyoxysorbitan alkyl esters; or zwitterionic active agents such as alkyl betaines, alkyldimethylamine oxides, and alkylalanines. Agents are listed as the main items. still,
Here, polyoxyalkylene refers to ethylene oxide,
Indicates a polymer of propylene oxide or butylene oxide.

These (C) component surfactants are preferably blended in the cleaning composition of the present invention in an amount of 0.01 to 30%, particularly 0.5 to 10%. If the blending amount is less than 0.01%, no special effect will be produced by adding the surfactant, and even if the blending amount exceeds 30%, it is difficult to obtain the effect of adding more.

Furthermore, by containing water, the cleaning composition of the present invention exhibits cleaning properties against a wider range of stains such as inorganic stains that are easily ionized other than organic stains.

The amount of water in the cleaning composition of the present invention is 5 to 45%, especially 10 to 3%.
It is preferable that it be blended in an amount of 0%. If the blending amount is less than 5%, it is difficult to obtain the effect of adding water;
If it exceeds %, the cleaning performance against organic stains deteriorates, which is not preferable.

In addition, the cleaning composition of the present invention may further contain compounds having chelating power such as aminocarboxylic acid salts such as hydroxyethylimino diacetic acid and ethylenediaminetetraacetic acid, if necessary, within a range that does not impair the effects of the present invention. Preservatives, antioxidants, rust preventives, alcohols, hydrocarbon solvents, etc. can be added.

The cleaning agent of the present invention has a particularly excellent effect on cleaning precision parts and jigs and tools used in the assembly process thereof.
Here, precision parts include, for example, electronic parts, electrical parts, precision mechanical parts, resin-processed parts, optical parts, and the like. here,
Electronic components include, for example, printed wiring boards used in computers and their peripheral equipment, home appliances, communication equipment, ○A equipment, and other electronic application equipment; used in contact members such as IC lead frames, resistors, capacitors, and relays. Hoop materials; Liquid crystal displays used in OA equipment, watches, computer equipment, toys, home appliances, etc.; Magnetic recording parts used in video/audio recording/playback parts and related parts; Semiconductors such as silicon and ceramic wafers. Materials: Electrostrictive parts such as crystal resonators; CD.

Refers to photoelectric conversion parts used in FDs, copying equipment, optical recording equipment, etc. Electrical parts include, for example, electric motor parts such as brushes, rotors, stators, housings, etc.; ticket issuing parts used in vending machines and various devices; coin inspection parts used in vending machines, cash dispensers, etc. Precision mechanical parts include, for example, bearings used in precision drive equipment, video recorders, etc., and machining parts such as carbide tips. Resin processed parts refer to precision resin processed parts used for cameras, automobiles, etc., for example. Further, optical parts include lenses used in cameras, glasses, optical instruments, etc., and other parts include glasses frames, watch cases, watch straps, etc.

In the present invention, the jigs and tools used in the assembly processing process are used to manufacture precision parts such as those shown in the various parts examples above.
Refers to jigs and tools used in various processes such as molding, processing, assembly, and finishing, as well as various equipment and parts that handle these precision parts.

The cleaning composition of the present invention exhibits suitable performance particularly for the above-mentioned printed wiring boards with residual flux.
Not limited to these examples, substances that interfere with post-processes such as various processing oils and fluxes during the assembly process,
Alternatively, the cleaning composition of the present invention can be applied to precision parts and jigs and tools that have a solid surface of a certain shape and are covered with various oil-based contaminants that degrade product properties.

The cleaning composition of the present invention is particularly effective when these contaminants are mainly organic oil stains such as oil, machine oil, cutting oil, grease, liquid crystal, rosin flux, etc. It is also possible to sufficiently wash and remove dirt mixed with inorganic powder, moisture, etc.

The cleaning composition of the present invention can be used in various cleaning methods such as immersion method, ultrasonic cleaning method, rocking method, spray method, steam cleaning method, manual wiping method, water displacement drying method, etc., and obtains favorable results. be able to.

When the cleaning agent of the present invention is used, for example, in the process of cleaning a printed wiring board to which flux has adhered, ultrasonic cleaning may be performed using, for example, an ultrasonic cleaning tank containing the cleaning agent composition of the present invention.

After cleaning, the cleaning composition of the present invention can be easily removed with water or the like.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

Examples 1 to 12 and Comparative Examples 1 to 5 Cleaning compositions having the compositions shown in Table 1 were prepared, and their cleaning properties and flux removal properties were evaluated. The results are shown in Table 1.

(1) Cleanability test 70m+nX 500 on a 150mm steel test piece
■/rn' ratio of naphthenic mineral oil (40℃, 350℃
Apply st). This test piece was immersed in a cleaning solution kept at 40° C. and cleaned with ultrasonic waves for 5 minutes.

Then, it was immersed in ion-exchanged water at 30°C for 10 seconds, and after drying,
The cleanability was visually evaluated.

(Evaluation criteria) Cleanability ◎: Back surface is completely clean O: There is almost no mineral oil residue on the surface △: There is a slight mineral oil residue on the back surface X: There is mineral oil residue on the surface (2) Flux removability test The printed wiring board on which the IC chip was mounted was subjected to flux treatment, and then soldered to prepare a test piece. This test piece was immersed in a cleaning solution maintained at 50 t', and after 3 minutes of ultrasonic cleaning, it was rinsed with 30°C ion-exchanged water, and after drying, the removability of flux from the printed wiring board was visually evaluated. The removability of ionic stains remaining on the printed wiring board was evaluated using the MIL-P-28809 method.

(Evaluation criteria) Visual evaluation ◎: No flux residue, extremely high cleaning power ○: Almost no flux residue, great cleaning power △: Slight flux residue, but good cleaning power X: No flux residue , NIL-P-, which has poor cleaning power
The larger the 28809 numerical value, the greater the cleaning power, and if it is 2 megohm or more, it is passed.

Note) (POB), : Polyoxyethylene (POB),
:Polyoquine butylene (POP), :Polyoxypropylene n indicates the average number of added moles.

〔Effect of the invention〕

As seen from Unegami, the cleaning composition of the present invention has excellent cleaning properties,
Since it has deterioration resistance, good safety, and no concern about environmental pollution, it can be advantageously used as a cleaning agent for precision parts or jigs and tools used in the assembly process.

that's all

Claims (2)

[Claims] 1. The following components (A) and (B) (A) The following general formulas (I), (II) and (III) ▲ Numerical formula,
There are chemical formulas, tables, etc. ▼ (I) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (II) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (III) [In the formula, R^1 is a carbon number of 1 to 22 Represents a hydrocarbon residue, R^2 and R^3 each represent an alkylene group having 2 to 4 carbon atoms, Y represents a hydrogen atom or an alkyl group or acyl group having 1 to 4 carbon atoms, and m represents 1 to 4. 15 integers, n
, l and p each represent an integer of 0 to 15] 50% by weight or more of an alkylene oxide compound selected from the group consisting of compounds represented by (B) The number of nitrogen atoms is 1 to 5 and the molecular weight is in the range of 50 to 300. A cleaning composition for precision parts or tools containing 0.05 to 5% by weight of a certain amine compound. 2. Furthermore, the following component (C) (C) Surfactant 0.01-30% by weight The cleaning composition according to claim 1, comprising: